论文标题

与频谱和能源合作的H-Cran中的跨层资源分配

Cross Layer Resource Allocation in H-CRAN with Spectrum and Energy Cooperation

论文作者

Moosavi, Nazanin, Sinaie, Mahnaz, Azmi, Paeiz, Lin, Pin-Hsun, Jorswieck, Eduard

论文摘要

5G及以后的无线网络是当前蜂窝网络的即将到来的演变,以提供未来需求的基本要求,例如高数据速率,低能源消耗和低潜伏期,以为新兴应用程序提供无缝通信。异构云无线电访问网络(H-Cran)被设想为5G的新趋势,它利用异质和云无线电访问网络的优势来提高光谱和能源效率。在本文中,基于有效能力(EC)的概念,我们提出了一个基于非正交多重访问(NOMA)的H-Cran的框架,以同时满足这些要求。我们提出的方法是在考虑宏基站(MB)和无线电遥控头(RRHS)之间的光谱和功率合作的同时,最大化有效的能效(EEE)。为了解决公式的问题并使其更加易于处理,我们将原始问题通过Dinkelbach算法将原始问题转换为等效的减法形式。之后,采用分布式稳定匹配和连续的凸算法(SCA)的组合框架以获取等效问题的解决方案。在此,我们提出了一种有效的资源分配方案,以最大程度地提高能源效率,同时保持所有用户的延迟服务质量(QoS)要求。仿真结果表明,所提出的算法可以在NOMA H-CRAN系统的EC和EEE和EEE以及Spectrum and Power Compotonation方面提供非平凡的权衡,并改善了拟议网络的EEE。此外,我们提出的解决方案复杂性远低于最佳解决方案,与最佳方法相比,它的差距非常有限。

5G and beyond wireless networks are the upcoming evolution for the current cellular networks to provide the essential requirement of future demands such as high data rate, low energy consumption, and low latency to provide seamless communication for the emerging applications. Heterogeneous cloud radio access network (H-CRAN) is envisioned as a new trend of 5G that uses the advantages of heterogeneous and cloud radio access networks to enhance both the spectral and energy efficiency. In this paper, building on the notion of effective capacity (EC), we propose a framework in non-orthogonal multiple access (NOMA)-based H-CRAN to meet these demands simultaneously. Our proposed approach is to maximize the effective energy efficiency (EEE) while considering spectrum and power cooperation between macro base station (MBS) and radio remote heads (RRHs). To solve the formulated problem and to make it more tractable, we transform the original problem into an equivalent subtractive form via Dinkelbach algorithm. Afterwards, the combinational framework of distributed stable matching and successive convex algorithm (SCA) is then adopted to obtain the solution of the equivalent problem. Hereby, we propose an efficient resource allocation scheme to maximize energy efficiency while maintaining the delay quality of service (QoS) requirements for the all users. The simulation results show that the proposed algorithm can provide a non-trivial trade-off between delay and energy efficiency in NOMA H-CRAN systems in terms of EC and EEE and the spectrum and power cooperation improves EEE of the proposed network. Moreover, our proposed solution complexity is much lower than the optimal solution and it suffers a very limited gap compared to the optimal method.

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